Denver Broncos’ poor offensive-line play exacerbated by a coaching fail

  (FULL ILLUSTRATION BELOW) Let’s get the obvious, elephant-in-the-room stuff out of the way first because it’s, well, obvious, elephant-the-room stuff: The 2015 Denver Broncos have a mish-mash, below-average, under-talented offensive line. The center is a second-year former college walk-on who couldn’t make it off the practice squad a year ago, one guard is a 34-year-old former All-Pro whose best…